Gravel-trap and air-chamber.



E. COLE. GRAVEL TRAP AND AIR CHAMBER.

APPLIOATION P ILBD Dnc. 8.1909.

Patented Aug, 23, 1910.

anesses:

W2? QW@ THE xokms PETER: co.. wAsHn-qmx, D` 1:.

ELNATI-IAN COLE, OF LOS ANGELES, CALIFORNIA.

GRAVEL-TRAP AND AIR-CHAMBER.

Specicaton of Letters Patent.

Patented Aug. 23, 1910.

Application filed. December 8, 11909. Serial No. 532,107.

To all whom 'it may concern:

Be it known that I, ELNATHAN Conn, a citizen of the United States,residing in the city of Los Angeles, State of California, have inventeda new and useful Combination Gravel -Trap and Air- Chamber', of whichthe following is a specification.

An object of this invention is to provide a more simple, durable andinexpensive strainer construction for a device adapted to be permanentlyinstalled in the water supply'pipe of a dwelling house, or any otherlike situation, for the purpose of preventing gravel and the likeinorganic substance from passing through the faucet or other valve,thereby causing wear of such faucet or valve.

The invention is adapted to be installed in any water system.

Another object of the invention is to provide a gravel trap furnishedwith an air chamber to prevent the water-hammer caused by the suddenturning oif of the water, and at the same time to assist in keepingclean the screen for arresting the entrance of the gravel.

Referring in detail to the accompanying drawing which illustrates theinvention, Figure 1 is a side view part-ly in section of a water supplypipe provided with the appliance. The trap is shown in section. Fig. 2is a front view partly in section of the screen for arresting thegravel.

Referring in detail to the drawings, 1 is an upright hollow body whichforms an air chamber projecting above and below the service pipe 2. Thesupply pipe 3 communicates with said body 1 desirably through an elbow 4and connection ta. The body 1 may be provided with a recessed projection5 on one side and a like recessed projection 6 von the other side, saidprojections respectively communicating with the fitting 4a and theservice pipe 2 which leads horizontally thereinto.

A lower extension 7 of the body 1 constitutes a gravel trap saidextension being provided at its lower end with a removable plug 8, toprovide for cleaning out the trap.

An upper extension 11 of body 1 constitutes an air chamber forpreventing waterhammer and for automatically cleaning the screen 12 aswill hereinafter be more fully explained. The air chamber 11 consists ofa tubular extension or pipe having an externally threaded lowerV end forscrewing into the upper flanged end 13 of the portion of body 1therebeneath, and a closure cap 14: screwing onto the upper end of saidair chamber. Then the pipe section 11 is unscrewed from the body of thetrap access may be readily had to the interior of said body to insertremove or clean the screen 12. It will therefore be seen that, if alarge air chamber is desired, the pipe section 11 may be made as long asmay be necessary to secure the required amount of air space and accessto the interior of the trap may be had just as readily by unscrewing thepipe section 11 instead of removing the cap 1&1.

Referring now to the screen 12, which is shown in detail in Fig. 2, saidscreen is desirably cast out of brass, being formed with a reducedtubular portion 15 adapted to fit tightly within the recessed portion 5,said screen is provided with a multiplicity of holes or perforations 16which may be formed by drilling. Said screen 12 is provided with anenlarged head conical in shape, the apex of the cone projecting towardand being opposite to the inlet 6, said screen 12 may be somewhat longerfrom end to end than the internal diameter of the body 1, but must notbe so long but that when the apex thereof is caused to enter the inlet 6the tubular portion of the screen may be brought into alinement andinserted within the outlet 5. The body 12 which forms the screenconsists of a metal shell of suflicient strength to provide for longwear and capable of withstanding heavy pressure when the same is appliedfrom a bar or small pipe which may be inserted through the pipe 6 tocrowd the reduced portion or shank 15 of the body 12 into place withinthe pipe 5 as shown in Fig. 1. This construction avoids the necessity ofusing bolts and bolt holes, and consequently avoids danger of leakage aswell as extra labor in putting the strainer in place.

In operation the screen 12 arrests gravel and other foreign mattercausing the same to fall to the bottom of the trap, which may be cleanedout after the plug 8 is removed. The screen is automatically preventedfrom clogging for the reason that whenever the supply is turned oifsuddenly by reason of the operation of the faucet 17, or like valve thewater-hammer or rebound from the outlet pipe 3 ejects any matter whichmay have accumulated in the perforations 16 and! causes said matter todrop to the bottom of the trap.

The body l of the appliance is desirably tubular in form, the lowerextension 7 being spacious enough to contain all the gravel and otherdeposits which will be apt to be arrested by the device :tor a longtime. Said body will, in practice, ordinarily be buried in the earthbeneath or near to the foundation of a dwelling house, which will makeit necessary to dig into the earth a little distance before access canbe had to the cap 8 to remove said cap for the purpose of cleaning outthe deposits. This will only have to be done at long intervals, however,on account of the spacious extension 7 being adapted to retain a largeamount of deposit.

I claim:

In combination, an inlet conduit7 a chamber into which said conduitleads, an outlet conduit opposite to said inlet conduit, a perforatedmetal head to form a strainer, said head being disposed opposite to theinlet conduit and being adapted to withstand Cil tit within said outletconduit, said shank 39 being adapted to be driven into said outletconduit by force applied to said head through said inlet, said headbeing supported solely by said shank, said head overhanging a clearspace in said chamber.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses at Los Angeles, in the county of Los Angelesand State of California, this second day of December 1909.

ELNATHAN COLE.

Witnesses:

ALBERT I-I. MERRILL, FLORA H. Foss.

